25406790 has 64 divisors (see below), whose sum is σ = 64088064. Its totient is φ = 6438528.

The previous prime is 25406783. The next prime is 25406791. The reversal of 25406790 is 9760452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25406791) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51927 + ... + 52413.

It is an arithmetic number, because the mean of its divisors is an integer number (1001376).

Almost surely, 2^25406790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25406790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32044032).

25406790 is an abundant number, since it is smaller than the sum of its proper divisors (38681274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25406790 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (25406789) it forms an eRAP, since the sums of their prime factors are consecutive (580 and 581).

25406790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 25406790 is about 5040.5148546552. The cubic root of 25406790 is about 293.9791970102.

The spelling of 25406790 in words is "twenty-five million, four hundred six thousand, seven hundred ninety".